Table 4.

Component matrix after oblique rotation in EFA (n = 87)

Item	Question	Factor 1 rotated component loading	Factor 2 rotated component loading
Item 1	If you eat the entire container, how many calories will you eat?	0.666	−0.211
Item 2	If you are allowed to eat 60 g of carbohydrates as a snack, how much ice cream could you have?	0.769	−0.042
Item 3	Your doctor advises you to reduce the amount of saturated fat in your diet. You usually have 42 g of saturated fat each day, which includes one serving of ice cream. If you stop eating ice cream, how many grams of saturated fat would you be consuming each day?	0.605	−0.156
Item 4	If you usually eat 2,500 calories in a day, what percentage of your daily value of calories will you be eating if you eat one serving?	0.725	0.176
Item 5	Is it safe for you to eat this ice cream?	−0.065	−0.907
Item 6	(Ask only if the patient responds “no” to question 5): Why not?	0.191	−0.843

Notes: Factor 1 is identified as the numeracy component of health literacy. Factor 2 is identified as the document literacy component of health literacy.

Abbreviation: EFA, exploratory factor analysis.